The Latest Breaking News from West Nile

National West Nile Surveillance Lags By Weeks, So Check Maricopa County Data Instead Of Federal Dashboards

CDC updates West Nile counts every one to two weeks and counts cases by residence, not exposure. Here is where to find better local data.

Medical Daily · Jul 27

New Mexico Confirms First Two West Nile Cases of 2026 in Bernalillo and Otero Counties

New Mexico confirms its first two West Nile cases of 2026. A Bernalillo County woman is hospitalized. Peak season runs August through September.

Medical Daily · Jul 27

West Nile Virus Deaths Rise in Arizona as 2026 Season Tracks at 5 Times the Historical Baseline

The 2026 West Nile virus season has recorded four deaths in Arizona and 48 national cases by late June, nearly five times the historical average. Peak season is still ahead.

Medical Daily · Jul 23

West Nile Virus Is Entering Peak Transmission Season, and 2026 Is Already the Worst in Over 20 Years

West Nile virus 2026 enters peak August-September window. CDC confirmed 48 cases by June 30, nearly 5x the historical average. Maricopa County: 29 cases, 5 deaths. No vaccine exists.

Medical Daily · Jul 15

CDC Says West Nile Virus Is Off to Its Earliest Start Since 2004 as Peak Season Approaches

CDC confirms 48 West Nile cases by June 30, 2026 — nearly 5x the historical average. Maricopa County leads with 29 cases and 5 deaths. Peak season is still ahead.

Medical Daily · Jul 13

West Nile Virus Season Hits a 22-Year High as CDC Urges Mosquito Precautions in 23 States

West Nile virus hits 22-year early-season high with 48 cases in 23 states as of June 30. CDC urges DEET use and mosquito control now.

Medical Daily · Jul 10

CDC urges Americans to prevent mosquito bites as West Nile cases surge

IN FULL

The Independent UK · Jul 8

West Nile Virus Detected in Nashville Mosquitoes for the First Time in 2026

Nashville Metro Public Health confirmed the first West Nile virus detection of 2026 in North Nashville on July 1. Here's the official guidance and what Davidson County residents should do.

Medical Daily · Jul 7

Four People Are Dead from West Nile Virus in Maricopa County: Here Is What Phoenix Residents Need to Do Tonight

4 people dead, 29 cases confirmed in Maricopa County — the worst early West Nile start in 20+ years. Phoenix residents should apply DEET repellent before tonight's outdoor events.

Medical Daily · Jul 4

West Nile cases hit highest total in decades as experts warn about mosquitos spreading the virus across the US

The US has seen the highest number of cases by this point in the year since 2004

The Independent UK · Jul 2